THE FERAL STRUT
Escaping her trailer-trash background for a summer job as a forest ranger in Wyoming, Mary Browne deals with various hazards, natural and human. But when she moves to Jackson Hole, and starts playing with her band, The Feral Sluts, she steps unwittingly into a life-or-death game that makes the wilderness seem safe.
Note: this is the second edition. It was published on WP a couple years ago and then taken down for a rewrite. So if it seems like you've read it. . . read it again.
This is the first book in a series. The second, SOWING ON THE MOUNTAIN, is presently being posted on WP.